ZRH to LHR flight delays
5,681 flights · March 2025 – August 2026 · UK Civil Aviation Authority
77.26%
Arrived on time
Within 15 minutes of schedule
1%
Cancelled
Share of scheduled flights
—
When late, late by
Average across delayed arrivals
10 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In February it ran 32.6 points more punctual than in September — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. LHR to ZRH arrives on time 6.6 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is one of the heavily flown routes in the record — 5,681 flights in the period. Frequency is itself a form of insurance: when a flight goes wrong there is another one within hours, which is not true of the thin routes elsewhere on this site.
The 2 airlines here are separated by under 3 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over March 2025 – August 2026, Swiss International Air Lines arrived on time most often on ZRH to LHR. British Airways was late most often. Flights ran closest to schedule in February and worst in September.
Every airline on ZRH to LHR
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Swiss International Air Lines | 3,408 | 78.12% | 0.91% | — | C |
| British Airways | 2,267 | 76.04% | 1.15% | — | C |
| United Airlines | 5 | 60% | 0% | — | — |
| American Airlines | 1 | 0% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LHR to ZRH London back to Zurich 70.64% on time DWhat these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ZRH to LHR during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →